Holder for front fork of bicycles



Feb. 11, 1947.

. A. A. R. FASTBORG HOLDER FOR -Fl'iON-T FORK OF BICYCLES Filed on] 5, 1944 Patented Feb. 11, 1947 TENT rric HOLDER FOR FRONT FORK F BICYCLES Anton Axel Romanus Fastborg, Stockholm, Sweden I Application October 5, 1944, Serial No. 557,315

In Sweden April 1, 1941 1 Claim. l

The present invention relates to an improved device for preventing the turning of the fork and front wheel of a cycle, when the latter is leaning against an object, or under similar circumstances. Particularly, the invention relates to devices of said type in which a bifurcated lever is pivoted to a holder element or clamp and is held by a spring in a position in which it prevents turning of the front fork of the cycle.

The main object of the invention is to provide a construction of a device of the type referred to, allowing the lever to be set conveniently in a position for holding the front forks. A further object of the invention is to reduce the total breadth of the device as compared with prior constructions of a similar type.

In order that the invention may be more fully understood and readily carried into effect, an embodiment thereof will be described hereinbelow with reference to the accompanying drawing in which Fig. 1 is a vertical elevation illustrating the front part of a cycle the splash-board of which carries a device according to the invention,

Fig. 2 is a longitudinal section of the device, and

Fig. 3 an end elevation of the same device.

Figs. 4 and 5 are detailed views of two alternative embodiments of the legs of the bifurcated level.

Secured to the splash-board l which is mounted at the front wheel i of the cycle and thus is brought along at turning the front wheel there is a clamp or mounting 3 having two legs formed as curved gripping members 6 which suit to and. embrace the edges of the splash-board. A screw 4 is carried through holes in the legs of said clamp and has mounted at its screwthreaded end outside the legs a nut 5 by which the legs may be tightened to engage the lateral edges of the splash-board steadily. Pivoted to the back or top of the clamp 3 by a hinge 3 is a lever l the free end of which is formed as a fork l2. The clamp is mounted at the splashboard so that when the lever is turned up the fork embraces the oblique frame tube 2 of the cycle frame as illustrated by Fig. 1. Since, generally, the frame tube has a smaller diameter than the breadth of the splash-board the application of the clamp to the splash-board instead of to the frame tube so that the fork will engage the latter involves the advantage that The lever l is held steadily in its turned-up as well as its turned-down position by suitable means as follows. The pin of the hinge 8 carries the sleeves of the hinge at the ends thereof, and between said sleeves there is an extension or tongue 9 which is engaged by a leaf spring H! secured to the bottom of the clamp by suitable means such as rivets 13. Below the hinge 8 said spring is formed with a curved portion or shoulder ll beyond which the spring has a short extension parallel with the direction of the clamp. When the lever is turned down as illustrated with dotted lines in Fig. 2 the shoulder H presses against the tongue 9 tomaintain this position of the lever. When the lever is turned up to the position illustrated by full lines in Fig. 2, the tongue 9 which stands substantially at right angles to the plane of the lever, has slid over the shoulder ll and entered between the spring ii] and the bottom of the clamp 3 whereby the clamp l is held steadily in its turned up position, i. e. the position in which the fork l2 embraces the frame tube 2.

If desired particular means may be provided to prevent such deformation of the tongue 9 and the spring 18 as can occur if the lever would be turned further in an anti-clockwise direction from the position shown in Fig. 2. Such means may. comprise a stopping member of a curved wire Hi the ends of which are bent inwards to engage holes in the shanks of the clamp 3. Thus the stopping member is pivoted to the clamp and. prevents the lever from being turned past a certain position in which the fork engages the frame tube. Further the lever may be formed with impressions l5 extending as channels or grooves in the longitudinal direction of the fork legs whereby the lever is reinforced.

A suitable covering of a soft material such as rubber, fibre, thick fabric or the like may be mounted at the legs of the fork l to protect the frame tube at the place of engagement of the 3 frame provided with an oblique frame tube opposite to said splash-board, comprising in combination a clamp formed with gripping members suited to embrace the opposite edges of the splash-board, a bifurcated lever pivoted to 5 oblique frame tube when the lever during its 1 swinging motion has reached the latter position,

said stopping member comprising a solid wire embracing the lever and secured to the clamp. ANTON AXEL ROMANUS FASTBORG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 10 Number Name Date 516,115 Roberts Mar. 6, 1894 FOREIGN PATENTS Number Country Date 29,214 Danish Jan. 11, 1922 20,256 British Sept. 11, 1907 

